Hagerstown, Maryland

Last updated: 10:37 PM CDT · Refresh

21°C

Feels like 22°

Mostly Cloudy

▲ 29° / ▼ 19°

Wind

6 mph S

Humidity

94%

Dew Point

19°

Pressure

29.11 inHg

Visibility

10 mi

UV Index

0.0

Cloud Cover

76%

Sunrise

6:00 AM

Sunset

8:33 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Hagerstown is currently mostly cloudy at 20°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 783 J/kg) — isolated convective development possible. Sunrise: 6:00AM · Sunset: 8:33PM.

55 AQI · Moderate Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

21°

17%

12 AM

20°

24%

1 AM

20°

27%

2 AM

20°

3 AM

20°

4 AM

20°

11%

5 AM

19°

23%

6 AM

19°

7 AM

20°

8 AM

22°

11%

9 AM

23°

16%

10 AM

24°

29%

11 AM

25°

29%

12 PM

26°

17%

1 PM

26°

11%

2 PM

27°

11%

3 PM

27°

12%

4 PM

27°

12%

5 PM

27°

6 PM

26°

7 PM

24°

8 PM

23°

9 PM

22°

10 PM

21°

7-Day Forecast

Tonight

29° 19°

Mostly Cloudy.

Wed

27° 16°

Mostly Clear with a 29% chance of rain.

Thu

27° 13°

Clear.

Fri

27° 13°

Overcast with a 32% chance of rain.

Sat

26° 16°

Partly Cloudy.

Sun

30° 16°

Rain, 70% chance.

Mon

32° 18°

Rain, 71% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 21° Mostly Cloudy 17% 6 mph S 94%

12 AM 20° Mostly Cloudy 24% 6 mph SSE 94%

1 AM 20° Partly Cloudy 27% 6 mph S 95%

2 AM 20° Partly Cloudy 6% 5 mph S 96%

3 AM 20° Partly Cloudy 7% 4 mph S 96%

4 AM 20° Partly Cloudy 11% 2 mph SSW 96%

5 AM 19° Mostly Clear 23% 3 mph SW 96%

6 AM 19° Mostly Clear 7% 4 mph SW 94%

7 AM 20° Mostly Clear 8% 4 mph WSW 93%

8 AM 22° Mostly Clear 11% 6 mph W 86%

9 AM 23° Mostly Clear 16% 8 mph W 77%

10 AM 24° Mostly Clear 29% 9 mph WNW 68%

11 AM 25° Partly Cloudy 29% 10 mph W 62%

12 PM 26° Partly Cloudy 17% 10 mph W 59%

1 PM 26° Partly Cloudy 11% 10 mph W 56%

2 PM 27° Partly Cloudy 11% 11 mph W 54%

3 PM 27° Partly Cloudy 12% 11 mph W 52%

4 PM 27° Mostly Clear 12% 12 mph WNW 51%

5 PM 27° Mostly Clear 7% 11 mph WNW 52%

6 PM 26° Mostly Clear 3% 10 mph WNW 55%

7 PM 24° Clear 3% 9 mph NW 57%

8 PM 23° Mostly Clear 3% 9 mph NW 60%

9 PM 22° Mostly Clear 3% 8 mph NW 63%

10 PM 21° Mostly Clear 3% 8 mph NNW 67%

15-Day Forecast

Today

7/21

Mostly Cloudy

17%

19°

29°

Wed

7/22

Mostly Clear

29%

16°

27°

Thu

7/23

Clear

13°

27°

Fri

7/24

Overcast

32%

13°

27°

Sat

7/25

Partly Cloudy

16°

26°

Sun

7/26

Rain

70%

16°

30°

Mon

7/27

Rain

71%

18°

32°

Tue

7/28

Rain

63%

17°

34°

Wed

7/29

Drizzle

44%

16°

29°

Thu

7/30

Drizzle

44%

15°

29°

Fri

7/31

Clear

60%

15°

28°

Sat

8/1

Drizzle

60%

16°

29°

Sun

8/2

Drizzle

60%

17°

29°

Mon

8/3

Drizzle

60%

17°

30°

Tue

8/4

Drizzle

60%

18°

31°

Moderate

U.S. Air Quality Index · Dominant: PM2.5

50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today

PM_2.5

Fine particulate matter

Dominant

55 AQI 11.3 µg/m³

O₃

Ground-level ozone

36 AQI 39 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 55 Moderate 36 55

Thu 36 Good 36 12

Fri 35 Good 35 23

About the Air Quality Index

0–50 Good

51–100 Moderate

101–150 Unhealthy for Sensitive Groups

151–200 Unhealthy

201–300 Very Unhealthy

301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM_2.5 (fine particles) is reported in µg/m³ and ozone (O₃) in ppb. Forecast source: NWS NAQFC.

Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio

RAP

Valid Wed Jul 22, 02:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE0 J/kg

MLCAPE111 J/kg

MUCAPE510 J/kg

SBCIN-5777 J/kg

MLCIN0 J/kg

Lifted Index0.9

Kinematics

0–6 km Shear36 kt

0–1 km Shear36 kt

Eff. Shear12 kt

0–1 km SRH-28

0–3 km SRH7

Eff. SRH25

Storm Motion239° @ 36 kt

0–1 km EHI-0.0

Composite Parameters

Sig. Tornado-0.0

STP (eff)0.0

Supercell0.1

K-Index32.4

Thermo & Levels

PWAT1.68 in

0–3 km LR4.1 °C/km

700–500 LR5.9 °C/km

Total Totals47.1

LCL968 hPa

LFC—

EL—

Freezing Lvl14,078 ft

Hagerstown, Maryland

Alerts